From 5cd8176478bfba8b321a25e2ac849af7f2f93c82 Mon Sep 17 00:00:00 2001
From: ptitSeb <sebastien.chev@gmail.com>
Date: Fri, 1 Apr 2022 10:45:53 +0200
Subject: More coverage for test17, and added NaN handling to 66 0F 7C opcode

---
 src/emu/x64run660f.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'src')

diff --git a/src/emu/x64run660f.c b/src/emu/x64run660f.c
index ada264d0..c8613dda 100644
--- a/src/emu/x64run660f.c
+++ b/src/emu/x64run660f.c
@@ -1244,11 +1244,25 @@ int Run660F(x64emu_t *emu, rex_t rex)
         nextop = F8;
         GETEX(0);
         GETGX;
+        #ifndef NOALIGN
+        is_nan = isnan(GX->d[0]) || isnan(GX->d[1]);
+        #endif
         GX->d[0] += GX->d[1];
+        #ifndef NOALIGN
+        if(!is_nan && isnan(GX->d[0]))
+            GX->d[0] = -NAN;
+        #endif
         if(EX==GX) {
             GX->d[1] = GX->d[0];
         } else {
+            #ifndef NOALIGN
+            is_nan = isnan(EX->d[0]) || isnan(EX->d[1]);
+            #endif
             GX->d[1] = EX->d[0] + EX->d[1];
+            #ifndef NOALIGN
+            if(!is_nan && isnan(GX->d[1]))
+                GX->d[1] = -NAN;
+            #endif
         }
         break;
 
-- 
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